<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		<div class="kaivon" id="kaivon"></div>
		<script>
			/**
			 * classname
			 * class是js的保留字
			 */
			var kaivon = document.getElementById("kaivon");
			console.log(kaivon.className);
		</script>
	</body>
</html>
